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RE: Why on earth not??? nt

Never mentioned bass, which by general agreement is nearly omnidirectional. The frequencies of interest would be maybe 500hz on up.
The space between the panel and the wall form a cavity. It is of regular dimention and will reflect the sound right back at the panel.
Sure, it'll go all over. And it'll diminish or fade very quickly.
5 degree toe might be enough to break up a standing back wave. I don't know.
By actual measure, my panels are toed at 11 degrees.

I suspect that you could MEASURE such a phenom by comparing a panels impulse response in Free Air VS in a room. Limit response window to 5 to7 ms. Try different frequencies, too.
You might ALSO see such energy reflected back to the amplifier, but I don't know, other than a O-Scope how you'd measure that.
Too much is never enough


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